The average sales price of single-family houses in Charlotte is $210,000 with a standard deviation of $35,000. A random sample of 49 single-family houses in Charlotte is selected. Let a represent the...

How do I find the mean and standard deviation? I know the answer will be respectively. Show steps please.

Extracted text: The average sales price of single-family houses in Charlotte is $210,000 with a standard deviation of $35,000. A random sample of 49 single-family houses in Charlotte is selected. Let a represent the mean sales price of the sample. Find the mean and standard deviation of æ, i.e., and